The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9448011 B1

PDF
Full Text
Expired
Date of Patent:
Sep. 20, 2016

Filed:

May. 16, 2013
Applicant:

Winston Mackelvie, Knowlton, CA;

Inventor:

Winston MacKelvie, Knowlton, CA;

Assignee:

Other;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F28F 21/00 (2006.01); F28F 1/00 (2006.01); F28F 21/06 (2006.01); F28F 21/08 (2006.01); F28D 7/10 (2006.01); F28D 21/00 (2006.01); E03C 1/00 (2006.01);
U.S. Cl.
CPC ...
F28F 1/00 (2013.01); F28D 7/106 (2013.01); F28D 21/0012 (2013.01); F28F 1/003 (2013.01); F28F 21/062 (2013.01); F28F 21/085 (2013.01); E03C 2001/005 (2013.01); F24D 2200/20 (2013.01); Y02B 30/566 (2013.01);
Abstract

A low cost hybrid horizontal drainpipe heat exchanger using a mixture of plastic and copper to reduce cost, the heat exchanger including a conduit which has upper and lower tube segments sealed together along respective longitudinal edges so as to create a tube or a pipe wherein the lower segment is thermally conductive and the upper segment is thermally insulative, the arrangement being such that any drainwater flowing through the drainpipe will flow interiorly on the lower segment for heat exchange purposes.


Find Patent Forward Citations

MacKelvie, Winston. (2016). Composite pipe heat exchanger for drainwater heat recovery (U.S. Patent No. 9448011). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9448011

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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